
package zz;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.List;

public class J03_MemberDAO implements J03_IMemberDAO {

	private final String DRV = "oracle.jdbc.driver.OracleDriver";
	private final String URL = "jdbc:oracle:thin:dlwntk6545/dlwntk6545@112.216.253.125:1521:xe";
	private String insertSQL = "insert into J03MEMBER values (exam.nextval, ?, ?, ?, ?, sysdate)";
	private String selectSQL = "select * from J03MEMBER order by mno desc";
	private String updateSQL = "update J03MEMBER set passwd = ?, name = ?, email = ?, regdate = sysdate where mno = ?";
	private String deleteSQL = "delete J03MEMBER where mno = ?";
	
	@Override
	public boolean insertMember(J03_MemberVO m) {
		Connection conn = null;
		PreparedStatement pstmt = null;
		boolean result = false;

		try {
			conn = this.openDatabase();
			pstmt = conn.prepareStatement(insertSQL);
			// ? 매개변수에 대입할 값 지정
			pstmt.setString(1, m.getUserid());
			pstmt.setString(2, m.getPasswd());
			pstmt.setString(3, m.getName());
			pstmt.setString(4, m.getEmail());
			pstmt.executeUpdate();
			result = true;

		} catch (Exception ex) {
			ex.printStackTrace();
		} finally {
			this.closeDatabase(conn, pstmt, null);
		}

		return result;
	} // insertMember

	// JDBC Connection 객체를 생성하는 메서드
	private Connection openDatabase() {
		try {
			Class.forName(DRV);
			return DriverManager.getConnection(URL);
		} catch (Exception e) {
			e.printStackTrace();
		}
		return null;
	}

	// JDBC객체를 닫는 메서드
	private void closeDatabase(Connection c, PreparedStatement p, ResultSet r) {
		if (r != null)
			try {
				r.close();
				r = null;
			} catch (Exception e) {
			}
		if (p != null)
			try {
				p.close();
				p = null;
			} catch (Exception e) {
			}
		if (c != null)
			try {
				c.close();
				c = null;
			} catch (Exception e) {
			}
	}

	// select 문으로 전체 회원정보를 조회한 후 MemberVO를 내용으로
	// 가지는 동적배열 List로 결과를 넘김
	@Override
	public List<J03_MemberVO> selectMember() {
		Connection conn = null;
		PreparedStatement pstmt = null;
		ResultSet rs = null;
		List<J03_MemberVO> result = new ArrayList<>();

		try {
			conn = this.openDatabase();
			pstmt = conn.prepareStatement(selectSQL);
			rs = pstmt.executeQuery();
			
			
			while (rs.next()) {
				J03_MemberVO m = new J03_MemberVO();
				m.setMno(rs.getString("mno"));
				m.setUserid(rs.getString("userid"));
				m.setPasswd(rs.getString("passwd"));
				m.setName(rs.getString("name"));
				m.setEmail(rs.getString("email"));
				m.setRegdate(rs.getString("regdate"));
				result.add(m);
			}

		} catch (Exception ex) {
			ex.printStackTrace();
		} finally {
			this.closeDatabase(conn, pstmt, rs);
		}

		return result;
	}

	@Override
	public boolean updateMember(J03_MemberVO m) {
		Connection conn = null;
		PreparedStatement pstmt = null;
		boolean result = false;

		try {
			conn = this.openDatabase();
			pstmt = conn.prepareStatement(updateSQL);
			// ? 매개변수에 대입할 값 지정
			pstmt.setString(1, m.getPasswd());
			pstmt.setString(2, m.getName());
			pstmt.setString(3, m.getEmail());
			pstmt.setString(4, m.getMno());
			
			int cnt = pstmt.executeUpdate();
			
			
			if (cnt == 0) System.out.println("명령은 잘 실행되었지만, 수정된 데이터는 없음");
			
			result = true;

		} catch (Exception ex) {
			ex.printStackTrace();
		} finally {
			this.closeDatabase(conn, pstmt, null);
		}

		return result;
	}
	
	@Override
	public boolean deleteMember(J03_MemberVO m) {
		Connection conn = null;
		PreparedStatement pstmt = null;
		boolean result = false;

		try {
			conn = this.openDatabase();
			pstmt = conn.prepareStatement(deleteSQL);
			// ? 매개변수에 대입할 값 지정
			pstmt.setString(1, m.getMno());
			int cnt = pstmt.executeUpdate();
			
			if (cnt == 0) System.out.println("명령은 잘 실행되었지만, 삭제된 데이터는 없음");
			
			result = true;

		} catch (Exception ex) {
			ex.printStackTrace();
		} finally {
			this.closeDatabase(conn, pstmt, null);
		}

		return result;
	}
	

}
